Condenser for smelter-fumes.



G. P. LUEDKE.

CONDENSER FOR SMYELTER FUMES. APPLICATION man MAR.16, 1914.

1,229,629. PatentedJune 12,1917.

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G. P. LUEDKE. CONDENSER FOR SMELTER FUMES.

APPLICATION FILED MAR. 16, I914- 1,229,629. Patented June 12, 1917.

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GUSTAV I. LUEDKE, OF CHATHAM, ILLINOIS.'

CONDENSER ron SMELTER-FUMES.

Original application filed April 22, 1912, Serial No. 692,525.

Specification of Letters Patent. Patented June 12, 1917.

Divided and this application filed March 16,

1914. Serial No. 824,991.

To all whom it may concern:

Be it known that I, GUSTAV P. LUEDKE, a citizen of the United States, residing at Chatham, in the county of Sangamon and State of Illinois, have invented a new and useful Condenser for Smelter-Fumes, of which the following is a specification.

The present application is a division of my prior application for Letters Patent on a process and an apparatus for condensing gases, Serial No. 692,525, filed on the 22nd day of April, 1912.

By way of explanation it may be stated that fumesleaving a smelter are at a high temperature and are laden with such substances as arsenic trioXid and zinc oXid.

The present invention aims to provide novel means for cooling such fumes and for salvaging the heat derived therefrom.

Another object is to provide novel means for saving the precipitate from the fumes.

Another object is to provide means whereby the fumes may be selectively directed to travel in close relation to a cooling and salvaging means, or in spaced relation thereto.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view a which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawing Figure 1 shows in perspective, a structure embodying the present invention, parts being broken away;

Fig. 2 is a cross section of the device delineated in Fig. 1.

Fig. 3 shows in vertical longitudinal section, a structure embodying the present invention, the inlet and outlet flues being delineated as added details.

In carrying out the present invention there is provided a casing 1 including a top 19, a horizontal partition 2 and side walls 20, there being vertical partitions 3 within the casing 1. The elements above described serve to side walls 24, a forward end wall 25 and intermediate longitudinal partitions 27, there being thus formed in the foundation 7, longitudinal compartments 8, 9 and 10, the compartment 8 being located below the chambers 23 and 6, the compartment 9 being located below the chambers 22 and 5, and the compartment 10 being located below the chambers 21 and 4.

In each of the compartments 8, 9 and 10 is disposed a grating 11, the compartments 8, 9 and 10 being separated, respectively, from thechambers 23, 22 and 21 by suitab e dumping bottoms 13 controlled by cranks 14 or in any other suitable manner. Access is had to the space below the gratings 11 through doors 12 hingedly mounted on the forward end Wall 25 of the foundation.

The forward ends of the chambers 21, 22 and 23 are controlled by hingedly mounted doors 18, but one of which is shown in the drawings. The forward ends of the chambers 4, 5 and 6 are controlled .by vertically slidable dampers 15, and the rear ends of these chambers are controlled by vertically slidable dampers 15.

Superposed upon the top 19 of the casing l and located above thechambers 5 and 22 is a salvaging and cooling means in the form of a boiler 16. A boiler 17 is similarly mounted with respect to the chambers 6 and 23, the boiler 17 preferably being somewhat smaller than the boiler 16/ If desired, the top 19 of the casing 1 may be equipped with flues 26 projecting within the boilers 16 and 17.

If the doors 18, the dampers 15, and the dampers 15 are opened, then the fumes from the smelter will traverse the chambers 4, 5, 6, 23, 22 and 21. If the dampers 15 and 15 are closed the doors 18 being opened, then the fumes from the smelter will traverse the chambers 21, 22 and 23 only. If the doors 18 are closed, the dampers 15 and 15 being opened, then the fumes will traverse the chambers 4, 5 and 6 only. If the doors 18 and the dampers 15 are opened, the dampers 15 being closed, then the fumes will pass through the chambers 21,22 and 23, and will enter the chambers 4, 5 and 6, without passing directly therethrough. By a judicious selection of the dampers and doors, the fumes may be made to pass beneath the boiler 16 alone, beneath the boiler 17 alone,

. of the fumes is reduced. The precipitate derived from thefumes is received on the doors 13, the doors 13 being operated by the cranks 1 1 to dump the precipitate on the grates 11, the precipitate ultimately passing into the compartments 8, 9 and 10, from which it maybe removed by means of doors 12.

The fumes preferably are delivered to the upper chambers 1, 5 and 6, and to the lower chambers 21, 22 and 23, through a flue 100. The'fumes leave these chambers byway of a flue 101. The flue 101 may be provided with a removable man-hole cover 102, through which a poker or othertool may be inserted, for thepurpose of manipulating the doors 18.

Copper oxid deposits its percipitate at a comparatively high temperature. Zinc oXid deposits its precipitate at a lower temperature. Arsenic trioXid deposits its precipitate at a still lower temperature. By manipulating the several dampers properly, the fumes may be made to pass through the device at a comparatively high temperature, so that the copper oXid, only, will deposit its precipitate, Such a result may be brought about, for instance, by opening the dampers 18 and by closing the dampers 15 and 15, under which circumstances, the fumes will pass through the lowerchambers 21, 22'and 23, at a considerable distance from the boilers 16 and 17, which act as heat abstracting elements. By arranging the dampers properly, the fumes may be cooled enough so that the zinc oxid will deposit its precipitate, and the dampers maybe arranged to cool the gas enough so that the arsenic trioXid will deposit its precipitate. It is therefore pos sible to deposit one precipitate only, namely the copper, to deposit two precipitates, namely the zinc and the copper, or to deposit three precipitates, namely the arsenic, the zinc andthe copper. The tanks 16 and 17 are of different efficiencies, so far as their capacity for cooling the gases are concerned, and it will be seen that the gases may be passed beneath the larger of these tanks, or beneath the smaller of the tanks. The specific arrangement of dampers in each of the many combinations, has not been described, since the particular arrangement of dampers will depend upon the temperature of the gas and can be fixed upon readily by a metallurgist, after a short series of experiments.

Having thus described the invention, what is claimed is 1. In a device of the class described, a foundation having a compartment; upper and lower chambers disposed above the compartment; a dumping bottom forming a partition between the lower chamber and the compartment; a damper controlling the forward end of the lower chamber; and damperscontrolling both ends of the upper chamber. i

2. In a device of the class described, a foundation having compartments; pairs of upperand lower chambers disposed above the compartments; a dumping bottom forming a partition between the lower chamber of each pair and one compartment; dampers controlling the forward ends of the lower compartments; dampers controlling the forward and rear ends of the upper compartments; and heat abstracting elements dis-' posed above the upper compartments, the heat abstracting elements being of different sizes.

In testimony that I claim the foregoing as my own, I have hereto-affixed my signature in the presence of two witnesses.

. GUSTAV P. LUEDKE.

Witnesses: I

JNo. L. KING, MioHAnL EOKSTEIN.

Copies of this patent may be obtained forfive cents each, by addressing :the Commissioner. of Patents,

Washington, D. C. 

